+A calendar year marks the period from a specified start date to an end date, often aligning with one full [Annual Cycle](/wiki/annual_cycle) of the Earth's orbit. It typically spans 365 days, or 366 in a [Leap Year](/wiki/leap_year), serving as a fundamental unit for organizing events and records.
+## See also
+- [Calendar](/wiki/calendar)
+- [Year](/wiki/year)
+- [Time](/wiki/time)
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